Good spot to watch the Perseid meteor shower. Good dark sky, but 3/4 moon this year at peak on Aug 12th. Main issue is going to be the horde of visitors in almost all of the public areas and on the tours of the ruins during daylight. Not as bad as South Rim GCNP, but still busy. IIRC, the park gates open after sunrise and close around 9pm. There is an expensive lodge in the park if you want to stay close and can get a room. The ruins are interesting. A wide angle zoom is useful when touring the ruins.